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Table 2 Descriptive and inferential statistics of radicular volumetric changes (mm3 and percentage) occurred after maxillary expansion

From: External root resorption and rapid maxillary expansion in the short-term: a CBCT comparative study between tooth-borne and bone-borne appliances, using 3D imaging digital technology

 

T0-T1 (mm3)

T0-T1 (%)

 

TB Group

BB Group

 

TB Group

BB Group

Upper (Test)

Teeth

n

Mean

SD

p value*

Mean

SD

p value*

p value**

Teeth

n

Mean

SD

p value*

Mean

SD

p value*

p value**

P1

20

9,74 (c)

3,77

p < 0.05

1,45 (c)

0,64

p < 0.05

p < 0.05

P1

20

8,11

2,85

NS

1,23

0,7

NS

p < 0.05

P2

20

8,23 (c)

3,11

1,68 (c)

0,53

p < 0.05

P2

20

6,35

2,25

1,41

0,52

p < 0.05

M1

20

26,21 (a,b)

10,03

4,62 (a,b)

3,12

p < 0.05

M1

20

8,31

3,01

1,47

1,03

p < 0.05

Lower (Control)

Teeth

n

Mean

SD

p value*

Mean

SD

p value*

p value**

Teeth

n

Mean

SD

 

Mean

SD

p value*

p value**

P1

20

-0,25

0,94

NS

-0,12

0,76

NS

NS

P1

20

-0,16

0,75

NS

-0,12

0,59

NS

NS

P2

20

-0,06

0,76

0,05

0,41

NS

P2

20

-0,05

0,59

0,04

0,5

NS

M1

20

0,37

1,34

0,26

1,21

NS

M1

20

0,11

0,43

0,08

0,81

NS

  1. P1 First premolar, P2 Second premolar, M1 First molar, TB Tooth borne, BB Bone borne, T0 Pre-treatment, T1 Post-retention, n Number of teeth, SD Standard deviation, NS Not significant
  2. p value* based on one-way analysis of variance (ANOVA) for intra-group comparison (different teeth) and set at p < 0.05; post-hoc assessment performed according to the Bonferroni's multiple comparisons test
  3. p value** based on Independent Student's t test for inter-groups comparison and set at p < 0.05
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BMC Oral Health

ISSN: 1472-6831

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